Borax is not used
As a styptic to stop bleeding
In making enamel and pottery glazes
As a flux in soldering
In making optical glass
Which of the following sublimes on heating?
AIF3
AICI3
AIBr3
AII3
Group 13 elements exhibit
Only + 3 oxidation state
Only + 1 oxidation state
Both + 1 and + 3 oxidation states
+1, +3 and -3 oxidation states
Inorganic graphite is
B2O3
BN
B4C
B3N3H6
Specify the coordination geometry around and hybridization of N and B atoms in a 1:1 complex of BF3 and NH3
N : tetrahedral, sp3; B : tetrahedral, sp3
N: pyramidal, sp3: B : Pyramidal, sp3
N: pyramidal, sp3; B: planar, sp3
N: Pyramidal, sp3; B ; tetrahedral, sp3
The type of hybridization of boron in diborane is
sp
sp2
sp3
sp3d2
Which of the flowing is most abundant among group 13 elements in the earth’s crust?
B
AI
Ga
In
Alumnium becomes passive in
Conc: HNO3
H2CrO4
HCIO4
All
Borazole is known as
Organic benzene
Organic compound
Inorganic compound
Inorganic benzene
The thermite process involves the use of
AI2O3 and Fe
AI2O3 and Fe2O3
AI and FeQ
AI and Fe2O3
